ASTROSAT CZTI

Data Quality Report

Orbit 32789

Creation date: 2024-06-27T20:42:02.199803
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T04_064T01_9000004730_32789cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32789cztM0_level2_quad_clean.evt
Size (bytes)625,792,32087,071,040
Size596.8 MB 83.0 MB
Events in quadrant A3,896,926563,465
Events in quadrant B3,788,044592,073
Events in quadrant C3,096,632600,850
Events in quadrant D7,822,050517,643

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146493
B0145202
C0123532
D0268372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51674769.212309%
B51672534.896458%
C5167661.277337%
D516785216.489259%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7049 5168 314 314 4.45% 6.08%
B 7049 5168 125 125 1.77% 2.42%
C 7049 5168 47 47 0.67% 0.91%
D 7049 5168 780 780 11.07% 15.09%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 237 1354693 10962.24 610 601 123.5
A 14 238 71374 572.95 610 601 123.5
A 7 16 49866 398.83 610 601 123.5
B 0 219 585634 4906.68 624 612 119.2
B 5 172 441913 3701.27 624 612 119.2
B 12 1 138023 1152.49 624 612 119.2
C 3 233 409744 2925.88 607 614 139.8
C 0 10 159979 1139.7 607 614 139.8
C 0 207 71721 508.52 607 614 139.8
D 8 195 2678269 18139.19 581 568 147.6
D 2 250 700248 4739.75 581 568 147.6
D 10 203 642809 4350.65 581 568 147.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter